
/*
 * Copyright 2011 Google Inc.
 *
 * Use of this source code is governed by a BSD-style license that can be
 * found in the LICENSE file.
 */
#include "SampleCode.h"
#include "SkView.h"
#include "SkCanvas.h"

class SpiralView : public SampleView
    {
    public:
        SpiralView()
            {
            this->setBGColor(0xFFDDDDDD);
            }

    protected:
        // overrides from SkEventSink
        virtual bool onQuery(SkEvent* evt)
            {
            if (SampleCode::TitleQ(*evt))
                {
                SampleCode::TitleR(evt, "Spiral");
                return true;
                }
            return this->INHERITED::onQuery(evt);
            }

        virtual void onDrawContent(SkCanvas* canvas)
            {
            SkPaint paint;
            paint.setAntiAlias(true);
            paint.setStyle(SkPaint::kStroke_Style);
            paint.setStrokeWidth(SkScalarHalf(SkIntToScalar(3)));
            paint.setStyle(SkPaint::kFill_Style);

            SkRect r;
            SkScalar l,t,x,y;
            l = SampleCode::GetAnimScalar(SkIntToScalar(10),
                                          SkIntToScalar(400));
            t = SampleCode::GetAnimScalar(SkIntToScalar(5),
                                          SkIntToScalar(200));

            canvas->translate(320,240);
            for (int i = 0; i < 35; i++)
                {
                paint.setColor(0xFFF00FF0 - i * 0x04000000);
                SkScalar step = SK_ScalarPI / (55 - i);
                SkScalar angle = t * step;
                x = (20 + SkIntToScalar(i) * 5) * SkScalarSinCos(angle, &y);
                y *= (20 + SkIntToScalar(i) * 5);
                r.set(x, y, x + SkIntToScalar(10), y + SkIntToScalar(10));
                canvas->drawRect(r, paint);
                }

            this->inval(NULL);
            }

    private:
        typedef SampleView INHERITED;
    };

//////////////////////////////////////////////////////////////////////////////

static SkView* MyFactory()
    {
    return new SpiralView;
    }
static SkViewRegister reg(MyFactory);